Tool-holder.



H. TURNER.

TOOL HOLDER.

APPLICATION FILED JUNE 20, 1912.

Patented July 14,1914.

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TOOL HOLDER. APPLIOATION PILBD JUNE 20, 1912.

1 W3AMO Patented July 14,1914,

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witnesses;

' J-l'arry Tumor.

inventor UNITED STATES PATENT OFFICE.

TURNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO ARMSTRONG BROS. TOOL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

roan-Hotness Specification of Letters Patent.

Patented July 14,- 1914.

Application filed June 20, 1912. Serial N 0. 104,742.

variety of tools of different shapes.

More specifically, the invention contemplates a'tool holder comprising a supporting member and a plurality of devices arranged to be interchangeably mounted on 'said supporting member, each of said devices being adapted for supporting one or more tools.

The invention also relates to the peculiar construction of the supporting member of the holder, whereby the tool-engaging devices may be easily and securely clamped or fixed on said supporting member.

A further object of the invention is to provide a tool holder of the character above setforth which shall be of strong and durable' construction and comprise the fewest possible parts.

The invention also relates to the other features of construction to be specifically pointed-out in the following description.

In' the accompanying drawings, Figures 1 and-2 are respectively a side and an edge elevation of the supporting member of a tool holder embodying the features of my invention. Fig. 3 is an elevation showing the'devices used for supporting one form of lathe tool; Fig. 4 is a section onlin- 4 4 of Fig.3. Figs. 5 and 6 are perspective views of acollar-and a washer respectively which lie atopposite sides of the head of the supporting member. F ig. 7 is an elevation ofthe same parts as shown in Figs. 3'and 4, but

showing a different arrangement of said parts for supporting a boring tool. Fig. 8 is a section on line 8 8 of Fig. 7 Fig. 9 is an elevation illustrating the manner of mounting a thrcad cutting tool. Fig. 10 is a section online 10 10 of. Fig. 9. Fig.11 is @a section ,on line 11 11 of Fig. 10 and" showing a thread-cuttin tool in'side elevation.

Fig. 12 is an elevationalview' illustrating asupporting a cutting-01f tool.

section on line 13 13 of Fig. 12.

While I have herein shown alternative constructions of my invention adapted for supporting several difierent shapes of, tools,-

I would have it understood that the invention is not limited to the constructions herein shown and described, but may be modified to conform to other shapes of tools than those hereinshown while retaining the gck neric characteristics of the invention and without departing from its spirit or scope. In the embodiment of my invention which I have shown in-the drawings, the support ing member 15 of the tool holder comprises a shank portion16 arranged to'be secured in the tool post of the lathe and a circular head portion 17 on one end of said shank. Said head portion has an opening 18 passing centrally theret-h-rough from side to side,

and each side of the head has a recess 19' slightly modified construction adapted for Fig. 13 is a surrounding, the opening 18'. The bottoms of" these r'ecesses are roughened or serrated to prevent slippage of the parts which engage with the head. The tools are secured. to the supporting member by means of a bolt 20 extending throughand fitting in the opening 18 in the head 17 of said supporting member, the enlarged head of said bolt having a transverse opening 21 therethrough"- through which opening'a lathe tool a ma be inserted. Between the head of the bolt and the adjacent side of the head of the supportin member is a collar 22 fitting upon the be t 20' and having a countersink 23 in its'ol'iter face arranged to receive thehead' of the bolt. Upon t e outer end of the 001-.

lar- 22 is 'an annular flange 24 having tww irs of-diametrically opposite notches 25 and 26 therein." The notches 25, as will' b seen from Fig. 5, are rectangular while the notches 26 are of V-shape. When the lathe tool a, shown in Figs. 3 and 4, isto be used in the tool holder, said tool is inserted in washer 2 8. The inner faces of the collar '22 and the washer 28 are roughened or serrated, as plainly shown in Figs. 5 and 6, to engage with the serrated bottoms of the recesses 19 in the head 17. Thus when the nut 27 is tightened up on the bolt the toola will be firmly clamped in place on the supporting member and rotation of the tool will be efl'ectually prevented by the serrated surfaces.

When a boring tool b,shown in Figs. 7 and 8, is to be used,-the tool is inserted through the opening 21 in the bolt head, and the collar 22 adjusted so that said tool lies in the V-shape notches 26. The nut 27 is then tightened up to clamp the tool in place as above described.

The thread-cutting tool 0, illustrated in Figs. 9, 1 0 and 11, is fitted upon the periphery of the collar 22 between the flange 24 thereon and the adjacent face of the head 17 of the supporting member, the collar being made in the proper dimension, so that said thread-cutting tool fits between these parts and permits the serrated surfaces on the collar and the supporting head to properly interengage. In order to prevent rotation of the cutting tool upon the collar, the latter is provided with a lug or projection 29 arranged to fit in a notch c in the vinner'pe- .riphery of the cutting tool. When the nut 27 is turned up, the cutting tool will-be se= curely fixed in place.

The construction illustrated in Figs.- 12' and 13 is somewhat modified to accommodate a cutting-oil tool at, which is in the form of a flat bar. The head of the bolt 2O has a slot 30 extending transversely and centrally thereof and parallel with the axisof the bolt. Said head also hasanother slot 31 therein at right angles with the slot 30 adapted to receive the tool 01. The collar 22 has grooves 32 in its outer face in which the tool d fits. The inner side of the head of the bolt 20 is made conical to fit in a conical recess in the collar 22. As will be seen, turnin of the nut 27 will draw the head of the b0 t inwardly and firmly bind the tool d in the slot 31 and the groove 32.

I do not limit my invention to the specificconstruction herein disclosed, but aim to cover all modifications within the scope of the appended claims.

. witnesses.

I claimas my invention: 1. In a tool holder, the combination of an attaching shank having a head thereon,the latter having an opening extending therethrough fromside'to side and having coun-- tersunk wrecesses in its opposite sides imof the attaching shank, the collar having a relatively deep recess in its outer face in which the head of said bolt fits snugly, and;

the said collar having a plurality of pairs of diametrically opposed notches of different the opening through the bolt-head in holding differently 'shaped tools, the inner end of said collar being adapted to fit snugly in the. recess in-the shank head, and being serrated to cooperate with the serrations in that recess, a washer surrounding the opposite end of said bolt and adapted to 'fit snugly in the shank head recess and having serrations to cooperate therewith, and a nut threaded on the last mentioned end of the bolt and turned tightly against said washer.

2. In a tool holder, in combination, an attaching shank provided with a head having an opening therethrough, I a. bolt passing through said opening, a collar fitting on said bolt, and held between the head of the bolt and said shank head, said collar being of smaller exterior diameter than the shank head, and being provided with an outstanding flange adjacent to its outer face, said shank head and said flange providing an annular groove adapted to receive an annular thread-cutting tool, and a nut threaded on shapes in its outer face, to cooperate with Y the opposite end of said bolt for clamping the partstogether. I

In testimony whereof'l have hereunto affixedmy signature in the presence of two HARRY TURNER.

Witnesses:

EARL C. CARLsoN,

GEORGE L. CHINDAHL. 

